Jack O'Brien boxer
- bouts
- 2
- won
- 1
- lost
- 1
- draw
- 0
- Status
- inactive
- Division
- middleweight
- Debut
- 1933-09-27
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Australia
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1937-02-27 | Tommy Vaughan | WLWWWD | Brisbane Stadium, Brisbane | LOST Points |
| 1933-09-27 | George Pringle | WWWDWW | Brisbane Stadium, Brisbane | WIN KO |